apport information

** Attachment added: "WifiSyslog.txt"
   
https://bugs.launchpad.net/bugs/1854225/+attachment/5326236/+files/WifiSyslog.txt

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https://bugs.launchpad.net/bugs/1854225

Title:
  Kernel oops and system lock up when invoking wg-quick up

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On 2 occasions over the past week I have had full system crashes after
  running "wg-quick up wg0". On the terminal, the command does not
  complete (i.e. it does not return to the prompt), the fans on my
  laptop start whirring and the system gradually becomes unresponsive
  before my desktop crashes and the system becomes completely
  unresponsive. On both occasions I opened another window to run "top"
  to see what process was consuming resources but "top" never actually
  runs. On the second occasion I managed to run "dmesg" before the
  system crashed completely and saw multiple lines of text about a
  kernel oops and red-highlighted text about a null-pointer dereference.

  I could reboot with "Alt-PrtScr_REISUB". On reboot I was confronted
  with the "system problem detected" dialog, but selecting the "report"
  option didn't seem to do anything. I have 2 reports in /var/crash from
  the last oops which I will attach to this report.

  I cannot reproduce this on demand. Most of the time, wg-quick performs
  normally. On both occasions the laptop had recently woken from
  suspend, but invoking "wg-quick" after waking from suspend doesn't
  trigger it on demand. On the first occasion I was running with stock
  boot options. On the second, I was running with "mitigations=off" as
  an experiment.

  
  $ lsb_release -rd
  Description:  Ubuntu 19.10
  Release:      19.10

  $ apt policy wireguard
  wireguard:
    Installed: 0.0.20190913-1ubuntu1
    Candidate: 0.0.20190913-1ubuntu1
    Version table:
   *** 0.0.20190913-1ubuntu1 500
          500 http://gb.archive.ubuntu.com/ubuntu eoan/universe amd64 Packages
          500 http://gb.archive.ubuntu.com/ubuntu eoan/universe i386 Packages
          100 /var/lib/dpkg/status

  $ apt policy wireguard-tools 
  wireguard-tools:
    Installed: 0.0.20190913-1ubuntu1
    Candidate: 0.0.20190913-1ubuntu1
    Version table:
   *** 0.0.20190913-1ubuntu1 500
          500 http://gb.archive.ubuntu.com/ubuntu eoan/universe amd64 Packages
          100 /var/lib/dpkg/status

  
  $ uname -a
  Linux padbeast 5.3.0-23-generic #25-Ubuntu SMP Tue Nov 12 09:22:33 UTC 2019 
x86_64 x86_64 x86_64 GNU/Linux

  # cat /etc/wireguard/wg0.conf 
  [Interface]
  PrivateKey = MyPrivateKey=
  Address = 10.66.66.5/24,fd42:42:42::5/64
  DNS = 8.8.8.8,1.1.1.1

  [Peer]
  PublicKey = MyPublicKey=
  Endpoint = my.domain.com:1195
  AllowedIPs = 0.0.0.0/0,::/0


  I'm reporting this as a security bug due to the "Null pointer
  dereference" in the kernel, but don't know if that is relevant. I
  don't know how to access or send the old dmesg information, so please
  let me know how to access this or how to collect it if the crash
  recurs.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: wireguard 0.0.20190913-1ubuntu1
  ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
  Uname: Linux 5.3.0-23-generic x86_64
  ApportVersion: 2.20.11-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: MATE
  Date: Wed Nov 27 20:44:24 2019
  InstallationDate: Installed on 2019-10-11 (47 days ago)
  InstallationMedia: Ubuntu-MATE 19.10 "Eoan Ermine" - Beta amd64 (20190926.2)
  PackageArchitecture: all
  SourcePackage: wireguard
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu16
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  neil       3007 F.... pulseaudio
   /dev/snd/pcmC0D0p:   neil       3007 F...m pulseaudio
  CurrentDesktop: MATE
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2019-10-11 (118 days ago)
  InstallationMedia: Ubuntu-MATE 19.10 "Eoan Ermine" - Beta amd64 (20190926.2)
  MachineType: LENOVO 2325A39
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  Package: linux (not installed)
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-12-generic 
root=/dev/mapper/vgubuntu--mate-root ro quiet splash mitigations=off 
vt.handoff=7
  ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-12-generic N/A
   linux-backports-modules-5.4.0-12-generic  N/A
   linux-firmware                            1.186
  RfKill:
   0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  Tags:  focal
  Uname: Linux 5.4.0-12-generic x86_64
  UpgradeStatus: Upgraded to focal on 2020-02-07 (0 days ago)
  UserGroups: adm audio cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 06/19/2018
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G2ETB3WW (2.73 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2325A39
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvrG2ETB3WW(2.73):bd06/19/2018:svnLENOVO:pn2325A39:pvrThinkPadX230:rvnLENOVO:rn2325A39:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.family: ThinkPad X230
  dmi.product.name: 2325A39
  dmi.product.sku: LENOVO_MT_2325
  dmi.product.version: ThinkPad X230
  dmi.sys.vendor: LENOVO

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